Results 21 to 30 of about 151,646 (288)

Influência do nitrogênio degradável no rúmen sobre a degradabilidade in situ, os parâmetros ruminais e a eficiência de síntese microbiana em novilhos alimentados com cana-de-açúcar Ruminal degradable nitrogen for steers fed sugar cane: in situ degradability, ruminal parameters and microbial synthesis efficiency

Revista Brasileira de Zootecnia, 2009
Objetivou-se avaliar o efeito da deficiência de nitrogênio degradável no rúmen (NDR), utilizando como volumoso cana-de-açúcar suplementada com uréia, farelo de soja ou farelo de glúten de milho - 60, sobre a eficiência de síntese microbiana e a ...
Roselene Nunes da Silveira, Telma Teresinha Berchielli, Roberta Carrilho Canesin, Juliana Duarte Messana, Juliano José de Resende Fernandes, Alexandre Vaz Pires   +5 more
doaj   +1 more source

Synthesis and Cytotoxic Activity of the Derivatives of N-(Purin-6-yl)aminopolymethylene Carboxylic Acids and Related Compounds

Molecules, 2023
Testing a number of N-[omega-(purin-6-yl)aminoalkanoyl] derivatives of 7,8-difluoro-3,4-dihydro-3-methyl-2H-[1,4]benzoxazine in a panel of nine tumor cell lines has shown that the studied compounds exhibit high cytotoxic activity, especially against 4T1 ...
Victor P. Krasnov, Olga A. Vozdvizhenskaya, Maria A. Baryshnikova, Alexandra G. Pershina, Vera V. Musiyak, Tatyana V. Matveeva, Kseniya V. Nevskaya, Olga Y. Brikunova, Dmitry A. Gruzdev, Galina L. Levit   +9 more
doaj   +1 more source

Comparative study and relationship analysis between purine content, uric acid, superoxide dismutase, and growth traits in purebred and crossbred Thai native chickens

Frontiers in Veterinary Science, 2023
The objective was to compare and analyze the relationship between growth, purine content, uric acid, and superoxide dismutase (SOD) in purebred and crossbred Thai native chickens. A total of 300 Thai native chickens were divided into 3 groups.
Veeraya Tantiyasawasdikul, Kitsadee Chomchuen, Wipas Loengbudnark, Vibuntita Chankitisakul, Vibuntita Chankitisakul, Wuttigrai Boonkum, Wuttigrai Boonkum   +6 more
doaj   +1 more source

Síntese de proteína microbiana e concentrações de uréia em vacas alimentadas com diferentes fontes de proteína Estimation of microbial protein synthesis and urea nitrogen metabolism in lactating dairy cows fed diets supplemented with different protein sources

Revista Brasileira de Zootecnia, 2006
Foram utilizadas 12 vacas Holandesas puras e mestiças, distribuídas em três quadrados latinos 4 x 4, organizados de acordo com os dias em lactação, com o objetivo de avaliar o efeito de diferentes fontes protéicas sobre a síntese, a eficiência de síntese
Douglas dos Santos Pina, Sebastião de Campos Valadares Filho, Rilene Ferreira Diniz Valadares, Edenio Detmann, José Maurício de Souza Campos, Mozart Alves Fonseca, Rafael Monteiro Araújo Teixeira, André Soares de Oliveira   +7 more
doaj   +1 more source

Metabolic Characterization of Antifolate Responsiveness and Non-responsiveness in Malignant Pleural Mesothelioma Cells

Frontiers in Pharmacology, 2018
Antifolates are a class of drugs effective for treating malignant pleural mesothelioma (MPM). The majority of antifolates inhibit enzymes involved in purine and pyrimidine synthesis such as dihydrofolate reductase (DHFR), thymidylate synthase (TYMS), and
Yuzo Sato, Yuzo Sato, Yuzo Sato, Yuzo Sato, Shiori Matsuda, Shiori Matsuda, Shiori Matsuda, Ami Maruyama, Ami Maruyama, Joji Nakayama, Joji Nakayama, Joji Nakayama, Tomoyuki Miyashita, Tomoyuki Miyashita, Tomoyuki Miyashita, Hibiki Udagawa, Shigeki Umemura, Kazuyoshi Yanagihara, Atsushi Ochiai, Masaru Tomita, Masaru Tomita, Tomoyoshi Soga, Tomoyoshi Soga, Katsuya Tsuchihara, Hideki Makinoshima, Hideki Makinoshima   +25 more
doaj   +1 more source

The influence of the addition of polymers on the physico-chemical properties of bentonite suspensions [PDF]

Science of Sintering, 2014
Bentonite clays have many applications in industries ranging from construction to cosmetics. Addition of polymers can profoundly influence the properties of bentonite suspensions and we now describe the influence of a range of different polymers.
Stojiljkovic S., Miljkovic V., Nikolic G., Kostic D., Arsic B., Barber J., Savic I., Savic I.   +7 more
doaj   +1 more source

Cryo-EM structures demonstrate human IMPDH2 filament assembly tunes allosteric regulation

eLife, 2020
Inosine monophosphate dehydrogenase (IMPDH) mediates the first committed step in guanine nucleotide biosynthesis and plays important roles in cellular proliferation and the immune response. IMPDH reversibly polymerizes in cells and tissues in response to
Matthew C Johnson, Justin M Kollman
doaj   +1 more source

Regulation of Microglial Functions by Purinergic Mechanisms in the Healthy and Diseased CNS

Cells, 2020
Microglial cells, the resident macrophages of the central nervous system (CNS), exist in a process-bearing, ramified/surveying phenotype under resting conditions.
Peter Illes, Patrizia Rubini, Henning Ulrich, Yafei Zhao, Yong Tang   +4 more
doaj   +1 more source

Potential Mechanisms Connecting Purine Metabolism and Cancer Therapy

Frontiers in Immunology, 2018
Unrestricted cell proliferation is a hallmark of cancer. Purines are basic components of nucleotides in cell proliferation, thus impaired purine metabolism is associated with the progression of cancer.
Jie Yin, Jie Yin, Jie Yin, Wenkai Ren, Xingguo Huang, Xingguo Huang, Jinping Deng, Tiejun Li, Yulong Yin, Yulong Yin   +9 more
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Synthesis a Number of Triazene Compounds Derived From Purine and Studying their Biological Activity on Pathogenic Bacteria [PDF]

مجلة جامعة الانبار للعلوم الصرفة, 2012
In this research a number of compounds were prepared by coupling dizonium salts with purine bases. The structures of the prepared compounds were identified by ultra violet ,infra red spectra and Elemental (C.H.N) analysis .The biological activity of ...
Ahmed .M. Mohamed, Hameed H.Ali, Yousif. H. Khalaf   +2 more
doaj   +1 more source